Plasmoine crystals: A platform to catalog resonances from ultraviolet to near-infrared wavelengths in a plasmonic library

Hanwei Gao, Wei Zhou, Teri W Odom

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

Surface plasmons are responsible for a variety of phenomena, including nanoscale optical focusing, neptive refraction, and surface-enhanced Raman scattering. Their characteristic evanescent electromagnetic fields offer opportunities for sub-diffraction imaging, optical cloaking, and label-free molecular sensing. The selection of materials for such applications, however, has been traditionally limited to the noble metals Au and Ag because there has been no side-by-side comparison of other materials. This feature article describes recent progress on manipulating surface plasmons from ultraviolet to near-infrared wavelengths using plasmonic crystals made from 2D nanopyramidal arrays. A library of plasmon resonances is constructed in the form of dispersion diagrams for a series of unconventional and new composite plasmonic materials. These resonances are tuned by controlling both intrinsic factors (unit cell shape, materials type) and extrinsic factors (excitation conditions, dielectric environment). Finally, plasmonic crystals with reduced lattice symmetries are fabricated as another means to tailor resonances for broadband coupling.

Original languageEnglish
Pages (from-to)529-539
Number of pages11
JournalAdvanced Functional Materials
Volume20
Issue number4
DOIs
Publication statusPublished - Feb 22 2010

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catalogs
Plasmons
platforms
Infrared radiation
plasmons
Wavelength
Crystals
wavelengths
crystals
Intrinsic Factor
Crystal symmetry
Precious metals
noble metals
Refraction
Crystal lattices
Electromagnetic fields
Raman scattering
Labels
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electromagnetic fields

ASJC Scopus subject areas

  • Biomaterials
  • Electrochemistry
  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Plasmoine crystals : A platform to catalog resonances from ultraviolet to near-infrared wavelengths in a plasmonic library. / Gao, Hanwei; Zhou, Wei; Odom, Teri W.

In: Advanced Functional Materials, Vol. 20, No. 4, 22.02.2010, p. 529-539.

Research output: Contribution to journalArticle

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